Excavator



No. 6|l,985. Patented Oct. 4, 898.

4 N. C. WRIGHT.

EXCAVATOB. (Application filed Feb. 8, 1898.) (M 4 Sheets-Sheet l.

Y IJIITA I l //V VENTOR Jlwsome 0.

ATTORNEYS.

L uonms PETERS co. mnmumnv, wAsmnnYan n c N0. 61!,985. Patqnted Oct. 4,i898.

N. c. WRIGHT.

EXCAVATOB.

(Applicatioq filed Feb. 8, 1898.) (No Model.)

W/TNESSES //v VENTOH Jlfewsome 0.

ATTORNEYS.

4 Sheets-Sheet 2 I No. 6||,985. Patented Oct. 4, I898.' N. C. WRIGHT.EXGAVATDB.

(Application E166. Feb. 8, 1898.)

4 Sheets-Sheet 4.

(No ModeL) //V VE N 70/? Jvusome 0.

WITNESSES ATTORNEYS.

"m: NORRIS FEYERS 00., pno'roumcv, WASHINGTON.

NITE STATES uric.

Aren't EXCAVATO R.

SPECIFICATION forming part of Letters Patent No. 611,985, dated October4, 1898.

Application filed February 8, 1898. Serial No. 669,563. (No model.)

T0 (0 whom it may concern:

Beit known that I, NEWSOME O. WRIGHT, a citizen of the United States,residing at Nashville, in the county of Davidson and State of Tennessee,have invented a new and useful Improvement in Excavators, of which thefollowing is a full, clear, and exact description.

My invention is an improved excavator designed and adapted especiallyfor use in excavating foundations, sewers, ditches, and otherexcavations and the invention consists in certain features ofconstruction and combinations of parts, as will be hereinafterdescribed, and pointed out in the claims.

In the drawings, Figure 1 is a side elevation, and Fig. 2 is a top planview, of my excavator. Fig. 3 is a perspective view of thetravelingblock-frame and the guideway therefor. Fig. 4 is a detailsection on about line 4: 4. of Fig. 2. Fig. 5 is a perspective view ofthe scoop and the parts immediately connected therewith. Fig. 6 isadetail view of the dumping mechanism, parts being broken away andothers shown in section. Figs. 7 and 8 are detail views of theguide-frame, and Fig. 9 is a detail perspective view of the upperportion of the upright shaft of the derrick-crane.

By my invention I provide, in connection with a scraper A, means fordragging such scraper to fill the same, means for elevating said scraperwhen full, for returning the scraper, when dumped, to position to berefilled, and for accomplishing such results expeditiously and withease.

The main frame of the apparatus includes a platform B, which to renderit portable may preferably be mounted on wheels 0, in which case Iprefer to provide the chock-bars D, pivoted at D so they maybe droppedto the position shown in Fig. 1 to anchor the apparatus in position.

The platform B may be framed and braced in any desired manner, and isprovided at about its middle with a well-hole B, through which passseveral of the lines, presently described,on their way to theirrespective drums of the hoisting-machine. chine E may preferably be anengine having the several drums, one for each of the operating-linespresently described, and the specific construction of said engine is notclaimed This hoisting-ma as my invention and taken alone forms no partof my present invention, and hence need not be described in detailherein. On the platform I mount the crane F, which is preferably aderrick-crane having the upright shaft F and the boom F whose upper endmay be adjusted by means of the line G, which is directed over suitableblocks and over a pulley g, thence under a pulley g, thence up throughthe well-hole B, and is secured to its respective drum G. By thisconstruction the boom can be raised or lowered, as desired, to suit thecircumstances and the work being done.

The upright F is journaled to an upright frame H, which is stayed bystrut-braces H, having a cross-bracev H carrying a pulley H which guidesthe line for operating the traveling block-frame, as presentlydescribed.

On the platform I mount guide-pulleys I and I preferably in a beam I andforming guides for the backing-line J, which leads to the drum J, andalso passes around pulleys K in an anchor-frame K arranged on the sideof the excavation opposite the excavator, the line .I having a hook J bywhich it may be connected with the scraper for thepurpose of returningthe empty scraper in the operation ofthe apparatus.

For the purpose of dragging the scraper forward I provide a line L,which may be a heavy chain, as shown, and is passed between and oversuitable guiderollers, as shown at L in Figs. 1, 2, and 4, so the lineLwill be properly directed and guided whether it comes from either sidein scraping or up from below, should it be desired to use said lineforhoisting, as will be understood from Fig. 1, in which case I preferto provide a guide-frame M, having a guide-pulley M, as shown in Fig. 1.

In excavating and like operations involving the use of pulley-blocks forthe purpose of securing greater power it is foundthat when the blocksare dragged over the ground the dirt not only greatly impairs theirusefulness, but the resulting wear is very great is movable. In theconstruction shown the pulley-block N is supported in a frame N, movableon the way 0, which is provided with wires or rails O, on which runpulleys N on the frame N, the line L being connected to the guide-frame,so it will be dragged up by the movement of said frame and may bereturned by the scraper as the latter is retracted by the drag-line J,as before described.

The way 0 is preferably inclined from its front end at L upward towardits rear end and may be extended rearwardly beyond the platform for thepurpose of securing a greater movement of the guide-frames N or forother purposes desired. The rails 0 maybe cables or rods fixed at oneend at O and having at their ends adjusting means at 0 so they may betautened as desired. At the upper rear end of the way 0, I provide apulley-block P, and the line Q for operating the block-frame N is passedaround the pulleys in such frame and in the pulley-block P, passesthence over the pulley I1 thence over a pulley Q and thence to itsoperatingr lru1n Q. By this construction great power can be exerted indrawing the block-frame N back along its guideway, and such block-framewill at all times have a clean way, which may be lubricated whennecessary in any desired manner.

The scraper A may be hoisted when necessary by the line L, as beforedescribed; but ordinarily I lift it by the hoisting-line R, which isdirected over suitable guide-pulleys, thence up through the well-holel3, and is secured to its drum R, by which means the scraper can behoisted by the crane and then swung to either side and dumped. To permitits dumping, I prefer to provide a tripping mechanism, as shown indetail in Fig. 6, in which the link S for connection with the hoistingdevices is connected with a bar S, to which is pivoted a hook S forsecuring the front lines of the scraper and a latch S for securing saidhook the latch having a tripping-line S and a ring S which may beoperated by a hook on a rod T, (see Fig. 5,) carried by the man whooperates the tag-line. In the operation of this construction when theparts are as shown in Fig. 5 and in the full-line position shown in Fig.6 the hook will be held in position to secure the front line of thescraper, so the latter may be lifted with its contents, and when swungto the desired position a pull may be exerted on the ring S either bymeans of the rod T or otherwise, and the latch be thrown to the dottedposition Fig. 6 to release the hook, when the scraper will dump asdesired.

In the use of my invention it will be seen the apparatus is supported onthe groundlevel and may work to any desired depth and at any distancenecessary, inasmuch as in cases where one movement of the block-frame Nwill not pull a sufficient distance the pull may be made in sections andthe block-frame returned for each pull, lengths of chain L beingsupplied and removed as necessary.

By working from the ground-surface and to any desired depth anddelivering the excavated material to the ground-surface the improvedapparatus possesses advantages over the ordinary steam-shovel.

If at any time soil is too heavy for the direct operation of thescraper, it may be re moved and plows connected with the line L, and bythe use of right-hand plows at one side and left-hand plows at the otherthe side walls of an excavation may be carried down straight. The soilwhen loosened can be removed by the scraper.

Where desired, the guideway 0 may be made in sections for convenience inhandling, such sections being secured together to form the guideway whendesired.

It will be understood that the several drums are under the control ofthe operator, so any one or more of the lines may be operated asdesired.

In the use of my apparatus I furnish means by which the scraper may beoperated for the purpose of filling it and for dragging it to thehoisting devices, may then be hoisted and swung to any point, may thenbe dumped and returned to a point over the excavation and loweredthereinto, and then by the backingline be returned for a new operation.

Where desired, the guideway,with the travcling pulley-block frame, maybe applied to any ordinary form of derrick having power hoistingmechanism and be operated in substantially the manner as described.

lVhen in the course of excavating heavy stones are met with, they maybereadily handled by any suitable form of grab or tongs applied to thehoisting-line, and in the course of building the walls such grabs ortongs may, with the hoisting devices, be utilized in setting the heavystones.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is- V 1. In an apparatus substantially as described,the combination of a bed-frame or platform, power hoisting mechanismthereon and a longitudinallyextended guideway, a derrick on saidplatform, the block-frame movable along the guideway, the hoistingline,the backing-line and the line for operating the block-frame, such linesbeing connected with their respective drums of the hoisting mechanism,substantially as set forth.

2. An apparatus substantially as described,

ICC

comprising a frame or platform, a guideway thereon, a block-framemovable on the guideway, a pulley block connected with said frame, aline extended from said frame for connection with the parts to beoperated thereby and a guide at the front end of the guideway for saidconnecting-line, substantially as set forth.

3. The combination of the bed or platform, the guideway extendedlongitudinally there on, the guide-rollers at the front end of saidguideway, the pulley-block at the rear end of said guideway, theblock-frame sliding on the guideway, the line extended from saidblockframe between the guide-rollers at the front end thereof, and theline for operating said block-frame, substantially as set forth.

4. In an apparatus substantially as described, the combination of theplatform, the derrick having a pivoted upright bar, the upright frame towhich said bar is pivoted the strut-braces for said upright frame, thecrossbrace between said strut-braces and provided with a guide-pulley,the guideway extended longitudinally on said platform and provided withthe traveling pulley-block frame, the line connected with saidpulley-block frame and extended over the guide-pulley of thecross-brace, the power mechanism having a drum to which said line isconnected, and means whereby the pulley-block framemay be connected withthe devices it operates, substantially as set forth.

5. An apparatus substantially as described, comprising the platform, thederrick-crane, the guideway, the block-frame movable on said guideway,the line for operating said block-frame, the hoisting-line, andthe linefor adjusting the boom of the derrick, the backing-line, and the enginehaving drums to which the several said lines are connected,substantially as set forth.

6. In an apparatus substantially as described, the combination of asuitable platform or frame, a guideway extended longitudinally thereon,guide rails or wires se cured at one end extended longitudinally of theguideway and adjusting connections for the other ends of said wire, andthe block frame movable longitudinally of the guideframe and havingportions engaging the wires or rails substantially as set forth.

7. An apparatus substantially as described comprising the main frame,the derrick on the same, the guideway mounted on the main frame andextended rearwardly from the'derrick and elevated toward its rear endthe block-frame traveling in said guideway, the line for operating saidblock-frame and the line for connecting said block-frame with the deviceto be operated substantially as set forth.

8. An apparatus substantially as described comprising the main frame,the guideway extended over the main frame and supported at its front andrear ends thereon and the lines for operating the block-frame and forconnecting it with the device to be operated, such lines being alsoextendedover the main frame substantially as set forth. NEWSOME O.WRIGHT. Witnesses:

SoLoN C. KEMON, PERRY B. TURPIN.

